Mercurial > sdl-ios-xcode
annotate test/testbitmap.c @ 1525:23a347cfbed8
Fixed bug #38
I'm using SDL 1.2.9 with Visual C++ 7.0 on Windows 2000.
Here's the setup: my game starts in a window, with
SDL_WM_GrabInput(SDL_GRAB_ON) to constrain the cursor to the game window. The
mouse cursor is outside of the window when the game launches, and when the
window appears the cursor is grabbed and placed at the top left corner of the
inside of the game window. At this point, if I click the mouse without moving
it, the SDL_MOUSEBUTTONDOWN event's mouse coordinates are (65535,65535).
| author | Sam Lantinga <slouken@libsdl.org> |
|---|---|
| date | Tue, 14 Mar 2006 06:00:30 +0000 |
| parents | be9c9c8f6d53 |
| children | 782fd950bd46 c121d94672cb |
| rev | line source |
|---|---|
| 0 | 1 |
| 2 /* Simple program: Test bitmap blits */ | |
| 3 | |
| 4 #include <stdio.h> | |
| 5 #include <stdlib.h> | |
| 6 #include <string.h> | |
| 7 | |
| 8 #include "SDL.h" | |
| 9 #include "picture.xbm" | |
| 10 | |
|
1151
be9c9c8f6d53
Removed atexit() from most of the test programs; atexit(SDL_Quit) isn't safe
Ryan C. Gordon <icculus@icculus.org>
parents:
691
diff
changeset
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11 /* Call this instead of exit(), so we can clean up SDL: atexit() is evil. */ |
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be9c9c8f6d53
Removed atexit() from most of the test programs; atexit(SDL_Quit) isn't safe
Ryan C. Gordon <icculus@icculus.org>
parents:
691
diff
changeset
|
12 static void quit(int rc) |
|
be9c9c8f6d53
Removed atexit() from most of the test programs; atexit(SDL_Quit) isn't safe
Ryan C. Gordon <icculus@icculus.org>
parents:
691
diff
changeset
|
13 { |
|
be9c9c8f6d53
Removed atexit() from most of the test programs; atexit(SDL_Quit) isn't safe
Ryan C. Gordon <icculus@icculus.org>
parents:
691
diff
changeset
|
14 SDL_Quit(); |
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be9c9c8f6d53
Removed atexit() from most of the test programs; atexit(SDL_Quit) isn't safe
Ryan C. Gordon <icculus@icculus.org>
parents:
691
diff
changeset
|
15 exit(rc); |
|
be9c9c8f6d53
Removed atexit() from most of the test programs; atexit(SDL_Quit) isn't safe
Ryan C. Gordon <icculus@icculus.org>
parents:
691
diff
changeset
|
16 } |
|
be9c9c8f6d53
Removed atexit() from most of the test programs; atexit(SDL_Quit) isn't safe
Ryan C. Gordon <icculus@icculus.org>
parents:
691
diff
changeset
|
17 |
| 0 | 18 SDL_Surface *LoadXBM(SDL_Surface *screen, int w, int h, Uint8 *bits) |
| 19 { | |
| 20 SDL_Surface *bitmap; | |
| 21 Uint8 *line; | |
| 22 | |
| 23 /* Allocate the bitmap */ | |
| 24 bitmap = SDL_CreateRGBSurface(SDL_SWSURFACE, w, h, 1, 0, 0, 0, 0); | |
| 25 if ( bitmap == NULL ) { | |
| 26 fprintf(stderr, "Couldn't allocate bitmap: %s\n", | |
| 27 SDL_GetError()); | |
| 28 return(NULL); | |
| 29 } | |
| 30 | |
| 31 /* Copy the pixels */ | |
| 32 line = (Uint8 *)bitmap->pixels; | |
| 33 w = (w+7)/8; | |
| 34 while ( h-- ) { | |
| 35 memcpy(line, bits, w); | |
| 36 /* X11 Bitmap images have the bits reversed */ | |
| 37 { int i, j; Uint8 *buf, byte; | |
| 38 for ( buf=line, i=0; i<w; ++i, ++buf ) { | |
| 39 byte = *buf; | |
| 40 *buf = 0; | |
| 41 for ( j=7; j>=0; --j ) { | |
| 42 *buf |= (byte&0x01)<<j; | |
| 43 byte >>= 1; | |
| 44 } | |
| 45 } | |
| 46 } | |
| 47 line += bitmap->pitch; | |
| 48 bits += w; | |
| 49 } | |
| 50 return(bitmap); | |
| 51 } | |
| 52 | |
| 53 int main(int argc, char *argv[]) | |
| 54 { | |
| 55 SDL_Surface *screen; | |
| 56 SDL_Surface *bitmap; | |
| 57 Uint8 video_bpp; | |
| 58 Uint32 videoflags; | |
| 59 Uint8 *buffer; | |
|
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Date: Fri, 15 Aug 2003 09:13:59 +0300
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60 int i, k, done; |
| 0 | 61 SDL_Event event; |
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62 Uint16 *buffer16; |
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63 Uint16 color; |
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64 Uint8 gradient; |
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65 SDL_Color palette[256]; |
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66 |
| 0 | 67 |
| 68 /* Initialize SDL */ | |
| 69 if ( SDL_Init(SDL_INIT_VIDEO) < 0 ) { | |
| 70 fprintf(stderr, "Couldn't initialize SDL: %s\n",SDL_GetError()); | |
|
1151
be9c9c8f6d53
Removed atexit() from most of the test programs; atexit(SDL_Quit) isn't safe
Ryan C. Gordon <icculus@icculus.org>
parents:
691
diff
changeset
|
71 return(1); |
| 0 | 72 } |
| 73 | |
| 74 video_bpp = 0; | |
| 75 videoflags = SDL_SWSURFACE; | |
| 76 while ( argc > 1 ) { | |
| 77 --argc; | |
| 78 if ( strcmp(argv[argc-1], "-bpp") == 0 ) { | |
| 79 video_bpp = atoi(argv[argc]); | |
| 80 --argc; | |
| 81 } else | |
| 82 if ( strcmp(argv[argc], "-warp") == 0 ) { | |
| 83 videoflags |= SDL_HWPALETTE; | |
| 84 } else | |
| 85 if ( strcmp(argv[argc], "-hw") == 0 ) { | |
| 86 videoflags |= SDL_HWSURFACE; | |
| 87 } else | |
| 88 if ( strcmp(argv[argc], "-fullscreen") == 0 ) { | |
| 89 videoflags |= SDL_FULLSCREEN; | |
| 90 } else { | |
| 91 fprintf(stderr, | |
| 92 "Usage: %s [-bpp N] [-warp] [-hw] [-fullscreen]\n", | |
| 93 argv[0]); | |
|
1151
be9c9c8f6d53
Removed atexit() from most of the test programs; atexit(SDL_Quit) isn't safe
Ryan C. Gordon <icculus@icculus.org>
parents:
691
diff
changeset
|
94 quit(1); |
| 0 | 95 } |
| 96 } | |
| 97 | |
| 98 /* Set 640x480 video mode */ | |
| 99 if ( (screen=SDL_SetVideoMode(640,480,video_bpp,videoflags)) == NULL ) { | |
| 100 fprintf(stderr, "Couldn't set 640x480x%d video mode: %s\n", | |
| 101 video_bpp, SDL_GetError()); | |
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1151
be9c9c8f6d53
Removed atexit() from most of the test programs; atexit(SDL_Quit) isn't safe
Ryan C. Gordon <icculus@icculus.org>
parents:
691
diff
changeset
|
102 quit(2); |
| 0 | 103 } |
| 104 | |
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Date: Fri, 15 Aug 2003 09:13:59 +0300
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105 if (video_bpp==8) { |
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Date: Fri, 15 Aug 2003 09:13:59 +0300
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106 /* Set a gray colormap, reverse order from white to black */ |
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107 for ( i=0; i<256; ++i ) { |
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108 palette[i].r = 255-i; |
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109 palette[i].g = 255-i; |
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Date: Fri, 15 Aug 2003 09:13:59 +0300
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110 palette[i].b = 255-i; |
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Date: Fri, 15 Aug 2003 09:13:59 +0300
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111 } |
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112 SDL_SetColors(screen, palette, 0, 256); |
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113 } |
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114 |
| 0 | 115 /* Set the surface pixels and refresh! */ |
| 116 if ( SDL_LockSurface(screen) < 0 ) { | |
| 117 fprintf(stderr, "Couldn't lock the display surface: %s\n", | |
| 118 SDL_GetError()); | |
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1151
be9c9c8f6d53
Removed atexit() from most of the test programs; atexit(SDL_Quit) isn't safe
Ryan C. Gordon <icculus@icculus.org>
parents:
691
diff
changeset
|
119 quit(2); |
| 0 | 120 } |
| 121 buffer=(Uint8 *)screen->pixels; | |
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122 if (screen->format->BytesPerPixel!=2) { |
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123 for ( i=0; i<screen->h; ++i ) { |
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124 memset(buffer,(i*255)/screen->h, screen->pitch); |
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125 buffer += screen->pitch; |
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126 } |
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127 } |
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128 else |
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129 { |
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130 for ( i=0; i<screen->h; ++i ) { |
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131 gradient=((i*255)/screen->h); |
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132 color = SDL_MapRGB(screen->format, gradient, gradient, gradient); |
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133 buffer16=(Uint16*)buffer; |
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134 for (k=0; k<screen->w; k++) |
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135 { |
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136 *(buffer16+k)=color; |
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137 } |
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138 buffer += screen->pitch; |
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139 } |
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Date: Fri, 15 Aug 2003 09:13:59 +0300
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140 } |
| 0 | 141 SDL_UnlockSurface(screen); |
| 142 SDL_UpdateRect(screen, 0, 0, 0, 0); | |
| 143 | |
| 144 /* Load the bitmap */ | |
| 145 bitmap = LoadXBM(screen, picture_width, picture_height, | |
| 146 (Uint8 *)picture_bits); | |
| 147 if ( bitmap == NULL ) { | |
|
1151
be9c9c8f6d53
Removed atexit() from most of the test programs; atexit(SDL_Quit) isn't safe
Ryan C. Gordon <icculus@icculus.org>
parents:
691
diff
changeset
|
148 quit(1); |
| 0 | 149 } |
| 150 | |
| 151 /* Wait for a keystroke */ | |
| 152 done = 0; | |
| 153 while ( !done ) { | |
| 154 /* Check for events */ | |
| 155 while ( SDL_PollEvent(&event) ) { | |
| 156 switch (event.type) { | |
| 157 case SDL_MOUSEBUTTONDOWN: { | |
| 158 SDL_Rect dst; | |
| 159 | |
| 160 dst.x = event.button.x - bitmap->w/2; | |
| 161 dst.y = event.button.y - bitmap->h/2; | |
| 162 dst.w = bitmap->w; | |
| 163 dst.h = bitmap->h; | |
| 164 SDL_BlitSurface(bitmap, NULL, | |
| 165 screen, &dst); | |
| 166 SDL_UpdateRects(screen,1,&dst); | |
| 167 } | |
| 168 break; | |
| 169 case SDL_KEYDOWN: | |
| 170 /* Any key press quits the app... */ | |
| 171 done = 1; | |
| 172 break; | |
| 173 case SDL_QUIT: | |
| 174 done = 1; | |
| 175 break; | |
| 176 default: | |
| 177 break; | |
| 178 } | |
| 179 } | |
| 180 } | |
| 181 SDL_FreeSurface(bitmap); | |
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1151
be9c9c8f6d53
Removed atexit() from most of the test programs; atexit(SDL_Quit) isn't safe
Ryan C. Gordon <icculus@icculus.org>
parents:
691
diff
changeset
|
182 SDL_Quit(); |
| 0 | 183 return(0); |
| 184 } |